Machine for applying compound to can-tops



N. TROYER.

MACHINE FOR APPLYING COMPOUND TO CAN TOPS.

APPLICATION FILED NOV. 20.1918.

PatentdSept. 14,1920.

5 SHEETS-SHEET 1- awomatoz v Nelsljn Truyer'- W I atto'c nu -N. TROYER.

MACHINE FOR APPLYING COMPOUND T0 CAN TOPS.

.APPLICATION FILED NOV. 20. 1918.

1,352, 41, A PatentedSept. 14, 1920.

5 SHEETS-SHEET 3- NE15|3I1 'Trt yer- N. TROYER.

MACHINE FOR.APPLY|NG QOMPOUND T0 CAN TOPS.

APPLICATION FILED NOV. 20, 1918.

7 1,352,641. PatentedSept.14,1920.

5 SHEETSSHEET 4.

N515 [1n T1" Dyer:

N. TROYER.

f MACHINE FOR APPLYING COMPOUND TO'CAIN ITOPS.

7 APPLICATION FILED NOV. 2011918- I 1 PatentedSept. 14,1920.

5 SHEETSSHEET 5.

Nelson Trnverattozweu UNITEDQSTATES PATENT OFFICE.

' NELSON TROYER, or SEATTLE, WASHINGTON, assIeNoR or ONE-HALF TO SEATTLE- ASTORIA IRON WORKS, orsEA'rrLE, WASHINGTON, A CORPORATION or WASHING- TON.

, MACHINE FOR AlPLYING COMPOUND TO BAN-TOPS.

Specificationof Letters Patent. Patented Sept. 14, 1920.

Application filed November 20. 1918. Serial Ito. 263,246.

To all whom it may concern:

Be it known that I, NELSON TRoYER, a citizen of the United States, and resident of the city of Seattle, county of King, and

State of Washington, have invented certain new'and useful Improvements in Machines for Applying Compound to Can-Tops, of which the following is a specification.

My invention relates to machines employed for the purpose of. applying a thin coating of a sealing compound to the flanges of the caps for tin cans, whereby, when the caps, have been clamped in place upon the cans the integrity of the joint is assured.

\ The object of my invention is to pro vide an apparatus for doing this work which will do the same work efliciently and effectively and particularly as to the rate of accomplishing the work and the character of the work when finished.

My invention comprises the novel parts and "combinations of parts which will be herein described and then particularly defined by the claims.

.In the accompanying drawings I have shown a machinein whichmy invention has been embodied in the manner of construction which is now preferred by me Figure 1 is an'elevation of the machine taken from one side.

Fig. 2 is an elevation of the machine taken from another side, the same, being that occupied by the operator.

Fig. 3 is a top plan View of the machine. Fig. 4 is a sectional plan view taken at a level just above that occupied by the-caps while being operated upon, or approximately upon the of Fig. 2.

planeindicated by the line 4-4 Fig. 5 is a vertical section taken on the 7 plane extending from front to rear through ciated parts.

Fig. 6 is a horizontal. section taken through the rotating head, this being taken immediately above the gear teeth thereof.

Fig. 7 is a section taken on a vertical plane showing the transfer head or turret employed for transferring the caps froln'the rotative head to the drying chamber.

Fig. 8 is a detail showing a can top and the rotating head and its immediately assothe means for holding and turning it and for applying the compound.

This machine is intended for operating upon caps of the kind which are employedin manufacturing what is known to the trade as sanitary cans. These cans are of a type WlllCll have the caps or heads secured thereon by a flanged seam. These caps, before being appliedto the can bodies, are pro vided with anupstanding peripheral flange and 1t 1s customary to apply to the innersurface ofthis flange, or in the corner formed bythe junction of this flange with the bodyof the cap, a thin-coating of sealing' material. This sealing. material is usually a substance, as for instance, a rub-1f ber compound, which is soluble in a volatile liquid. In consequence, if the compound be retained in its place for'only a very brief period and, particularly, if it be subjected to drying or evaporatin-g influences, the solvent fluid will be evaporated.

In my present machine I provide a means for holding a stack of thecaps to be treated in'position such that an automatic feeding device may take these, one at a time, and deliver them to the parts of the apparatus which apply the compound, and then deliver it to the drying chamber.

A convenient type. of means for holding the stack of caps to be treated consists of four vertical .rods 1, these being placed to p engage the edges of the stack of caps 10. Mounted to reciprocate in guides 12 carried by the frame, is a feeding plate 11, which is so constructed as to engage the lowermost of the pile of caps and remove the same. This reciprocating plate 11 is actuated by means of a link 13 connecting it with -a crank arm 14 carried by a .vertical shaft 15, which is' actuated through the bevel gears The particular means employed ,for holding and feeding the caps is immaterial.

The cap 10', as removed from the storage stack, is dropped in position where it would be engaged by-the fingers or arms 20 of a rotating transfer disk or turret '2. This disk is rotating immediately over the top of the table 3 of the frame. Concentric with the axis of this disk is a curved guide shoulder or Wall 30, which projects enough above the table to form a restraining wall,which wall-engages the outer edges of the caps 10,

as they are being transferred by the transfer tive head employed in applying the compound.

The main rotative head is mounted above holding and rotating means employs a ver- 'tical shaft 25 which is mounted to turn in a suitable journal whichis formed in, or

mounted upon, the body of the head 4.

Mounted upon the lower end of this shaft is a foot 26 of a size somewhat less than the diameter of the cap and adapted to engage with the upper surface of the cap and to hold the same between it and a complemental, lower rotative member 5. The shaft 25 is provided, at its upper end, with a pinion 27, which meshes with a non-rotative gear wheel 28, which wheel is fixedly supported from the frame through the arm 31 so that, as the head rotates upon its axis, the shaft 25 will be rotated, as well as be carried through a circular path by the rotation of the head.

The complemental clamping means consists of an under foot or turn table 5, which is mounted to turn upon a block 50, which block is in turn mounted for vertical reciprocation in a' disk or web 51, which disk is secured to the shaft 40 to thereby rotate in harmony with the upper head 4. The two eet 26 and 5 are in alinement..

Each of the blocks 50 is provided with a cam roller 52 which is adapted to engage a stationary cam flange 33, whereby the rotation of the head 4 will cause these blocks to be raised and maintained in raised position throughout a certain portion of the circular path through which they travel. In consequence, ifacap be placed between the two parts 5 and 26, and these be brought together by the raising of the lower, the cap will be held securely between them and, by reason of the fact that the .upper member 26 is rotated, the cap and the lower member 5 will also be rotated. .To permit this the lower member 5 is mounted upon ball bearings 53 which permit its free rotation.

The lower foot 5 turns upon a central stem 55, which stem has a collar 57 which has a sliding fit in a bore of the vertically reciprocating block 50 and is yieldingly supported by a spring 54, contained in said bore. The upward movement of the stem 55 and likewise of the lower foot 5, is limited by the lock nuts 56 onth'e lower end of the stem. These lock nuts are adjusted so that the block 50 will be given a slight excess raise by the action-of the cam 33. This is absorbed in the spring and insuresa uniform gripping pressure upon the tops.

These parts are so timed that when the cap 10 is placed in proper position by the rotating transfer disk or turret 2, the cap will be clamped between the upper and lower members 26 and 5, to be held therebetween and to be carried with them during the rotation of the head 4. It will be thus held and rotated until it reachesthe point where it is to be released and transferred to the drying mechanism, at which point the blocks 50 will be dropped, thus freeing the cap.

Mounted upon the outer surface of the rotating head 4, are a series of small pumps which are employed for discharging the sealing compound upon the inner surface of the flange of the cap. Each one'of the cap holding mechanisms has its correspond ing pump. This pump employs a section 6,

which is bored to constitute a cylinder together with suitable ports' and controlling valves and a plunger 60, which plunger is connected with slide 61, which slide is' mounted to slide in guides 62, formed in, or secured to, the outer surface of the head 4.

As herein shown, the guides 62 are'formed as part of a separate plate, which is secured a to the outside of the head.

Each slide 61 has a cam follower or wheel, 63, secured thereto and traveling in the groove of a non-rotative cam 32, which. cam is in the form of a ring fixedly supported from an arm 31 which rises from the frame of the machine. This cam ring is so shaped that it will cause one reciprocation of each plunger during each revolution of the head. The timing of this is such that the discharge of the compound from the pump will begin immediately after the cap has been clamped in position and its rotation started. The discharge of the compound into the caps is through short tubes 64, which are so placed as to discharge into the angle between the flange and the body of the cap. As the cap is at this time rotated, the

compound will be distributed about the periphery of the cap and the centrifugal effect caused by the rotation will cause it to adhere tothe inner face of the flange.

At the point where the caps are freed from the rotative memb'ersof the head, they are engaged by one of the fingersYO of the rotative transfer disk -7. This transfer disk is, in its general shape and manner of operation, similar to the transfer disk 2, which is employed for placing the capsin the rota} tive head. Associated with this is a slightly elevated guide wall 30, which is concentric thereto and which engages the outer edges of the cap while being transferred. -The end of this wall 30, which is nearest to the center of the rotative head 4, is in position to engage theeedge of the cap which is toward the center of the head 4 and thus to guide it out and away from the center of this head. As the cap reaches the side of thetransfer head, which at the time is away from the projections which are formed on the under sides of the fingers 70 of the transfer disk 7. The edges of the caps are engaged only by the projections 7 3 of the rotative head,

which lie between the recesses 71 at the lower casing 8. As however, the drying mechanism is not a part of my present invention,

it will not be described in detail. Any type of drying mechanism found suita ble may be used for this purpose. a a

For convenience, the main or driving pulley 9 is mounted loosely upon the main shaft 84 and is connected thereto by any suitable friction clutch mechanism, as90, which is controlled in its action by a lever 91, so placed as to be convenient to the operator, whereby he can start and stop the machine at any time. 2

.As a means for adjusting the amount of the compound delivered,I providemeans for adjusting thelength of the stroke given'the plungersfiO. This may be done by passing the upper ends of the plungers 60 through ears 41 carried by the reciprocating plate 61, and providing the plungers with a fixed tappet collar 65, which engages one side of the ears 41 and engaging the other side of 40 theears 41 by lock nuts 66, which form a complemental tappet and may be adjusted in position. In this manner the connection between the plungers 60 and the reciprocating plates 61,,by-which they are actuated,

45 may be given whatever amount of slack may be desired and thereby control the amount of compound delivered within certain extremes. J

What I claim as my invention is: v

1. A device for applying compound to can tops comprising a revolvinghead and meansfor carrying can tops about with said head and for revolving them upontheir axes, compound applying pumps having reciproeating plungers, discharge tipsvadapted to discharge into said caps, and means for operating said pumps comprising a slide mounted in guides carried by the head and having a lateral arm, a rod forming an extension of the pump plunger, tappets carried by said rod and adjustable in position there-- on and adapted to be engaged by the arm of said slide to thereby actuate the pump, a cam follower carried by each slide and a stationary-cam track engaged by said cam followers.

2. A machine of the character described, having ahead serving as a compound reservoir, a plurality of compound discharging pumps carried by said h ead and adapted to discharge compound therefrom, a pump actuating ca m, said cam and head having a relative r otation whereby the-cam maysuccessively operate all the pumps, and separate means associated with each pump for independently adjusting the length of stroke of the pumps. i

3. A machine of the character described; having a head serving as a compound reservoir, a plurality of compound discharging 0,

pumps carried by said head,-and adapted to discharge compound therefrom, a pump actuating cam, said cam and head having rela tive rotation whereby the cam may successively operate all the pumps, and means comprising a slide actuated by-the cam to have a constant movement and means for actuatively connecting said slide with the plunger provided witlr means for securing an adjustable amount of slack in said connection, whereby thevolume discharged may be regulated. I Signed at Seattle, Washington, this 14th day of November, 1918. y

NELSON TRo ER, 

